127 lines
3.6 KiB
C++
127 lines
3.6 KiB
C++
// This code contains NVIDIA Confidential Information and is disclosed to you
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// under a form of NVIDIA software license agreement provided separately to you.
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//
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// Notice
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// NVIDIA Corporation and its licensors retain all intellectual property and
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// proprietary rights in and to this software and related documentation and
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// any modifications thereto. Any use, reproduction, disclosure, or
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// distribution of this software and related documentation without an express
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// license agreement from NVIDIA Corporation is strictly prohibited.
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//
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// ALL NVIDIA DESIGN SPECIFICATIONS, CODE ARE PROVIDED "AS IS.". NVIDIA MAKES
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// NO WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO
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// THE MATERIALS, AND EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF NONINFRINGEMENT,
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// MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE.
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//
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// Information and code furnished is believed to be accurate and reliable.
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// However, NVIDIA Corporation assumes no responsibility for the consequences of use of such
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// information or for any infringement of patents or other rights of third parties that may
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// result from its use. No license is granted by implication or otherwise under any patent
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// or patent rights of NVIDIA Corporation. Details are subject to change without notice.
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// This code supersedes and replaces all information previously supplied.
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// NVIDIA Corporation products are not authorized for use as critical
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// components in life support devices or systems without express written approval of
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// NVIDIA Corporation.
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//
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// Copyright (c) 2008-2013 NVIDIA Corporation. All rights reserved.
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#ifndef PX_GPU_TASK_H
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#define PX_GPU_TASK_H
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#include "pxtask/PxTask.h"
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#include "pxtask/PxGpuDispatcher.h"
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#ifndef PX_DOXYGEN
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namespace physx
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{
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#endif
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namespace pxtask
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{
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PX_PUSH_PACK_DEFAULT
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/** \brief Define the 'flavor' of a GpuTask
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*
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* Each GpuTask should have a specific function; either copying data to the
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* device, running kernels on that data, or copying data from the device.
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*
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* For optimal performance, the dispatcher should run all available HtoD tasks
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* before running all Kernel tasks, and all Kernel tasks before running any DtoH
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* tasks. This provides maximal kernel overlap and the least number of CUDA
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* flushes.
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*/
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struct GpuTaskHint
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{
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/// \brief Enums for the type of GPU task
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enum Enum
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{
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HostToDevice,
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Kernel,
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DeviceToHost,
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NUM_GPU_TASK_HINTS
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};
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};
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/**
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* \brief Task implementation for launching CUDA work
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*/
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class GpuTask : public Task
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{
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public:
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GpuTask() : mComp(NULL) {}
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/**
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* \brief iterative "run" function for a GpuTask
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*
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* The GpuDispatcher acquires the CUDA context for the duration of this
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* function call, and it is highly recommended that the GpuTask use the
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* provided CUstream for all kernels.
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*
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* kernelIndex will be 0 for the initial call and incremented before each
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* subsequent call. Once launchInstance() returns false, its GpuTask is
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* considered completed and is released.
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*/
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virtual bool launchInstance(CUstream stream, int kernelIndex) = 0;
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/**
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* \brief Returns a hint indicating the function of this task
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*/
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virtual GpuTaskHint::Enum getTaskHint() const = 0;
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/**
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* \brief Specify a task that will have its reference count decremented
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* when this task is released
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*/
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void setCompletionTask(BaseTask& task)
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{
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mComp = &task;
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}
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void release()
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{
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if (mComp)
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{
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mComp->removeReference();
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mComp = NULL;
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}
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Task::release();
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}
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protected:
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/// \brief A pointer to the completion task
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pxtask::BaseTask* mComp;
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};
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PX_POP_PACK
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} // end pxtask namespace
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#ifndef PX_DOXYGEN
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} // end physx namespace
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#endif
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#endif
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